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Finding the Fourth Proportional to 618,512.91, 926,605.40 and 484,987.65

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Solution

The fourth proportional to 618,512.91, 926,605.40 and 484,987.65 is: 726,568.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,512.91 : 926,605.40 = 484,987.65 : x
  2. Step 2: Convert to fraction form
    618,512.91/926,605.40 = 484,987.65/x
  3. Step 3: Cross multiply
    618,512.91x = 926,605.40 × 484,987.65
  4. Step 4: Simplify right side
    618,512.91x = 449,392,172,998.37
  5. Step 5: Solve for x
    x = 449,392,172,998.37/618,512.91
  6. Step 6: Final answer
    x = 726,568.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.